upgrade to JUCE 5.4.3. Remove (probably) unused JUCE modules. Remove VST2 target (it's been end-of-life'd by Steinberg and by JUCE)

modules/juce_audio_devices/sources/juce_AudioSourcePlayer.h

@@ -45,7 +45,7 @@ public:
         Make sure this object isn't still being used by an AudioIODevice before
         deleting it!
     */
-    virtual ~AudioSourcePlayer();
+    ~AudioSourcePlayer() override;
 
     //==============================================================================
     /** Changes the current audio source to play from.

modules/juce_audio_devices/sources/juce_AudioTransportSource.h

@@ -49,7 +49,7 @@ public:
     AudioTransportSource();
 
     /** Destructor. */
-    ~AudioTransportSource();
+    ~AudioTransportSource() override;
 
     //==============================================================================
     /** Sets the reader that is being used as the input source.